C - dynamic linked vs. static linked

Hello World Code in C

#include <stdio.h>

int main(void)
{
    puts("Hallo Welt!");
}

Dynamisches Kompilieren

• gcc hello.c -o hello.dynamic
• ./hello.dynamic

Hallo Welt!

• ldd hello.dynamic

	linux-vdso.so.1 (0x00007ffdebfc2000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fc8da2a8000)
	/lib64/ld-linux-x86-64.so.2 (0x00007fc8da489000)

• ls -lh hello.dynamic

-rwxr-xr-x 1 root root  17K 18. Sep 18:37 hello.dynamic

Statisches Kompilieren und linken

• gcc -Os -static hello.c -o hello.static
• ./hello.static

Hallo Welt!

• ldd hello.static

not a dynamic executable

• ls -lh hello.static

-rwxr-xr-x 1 root root 795K 18. Sep 18:38 hello.static